MCP3561R-E/ST - 24-Bit Low-Noise Delta-Sigma ADC | Microchip
MPN： MCP3561R-E/ST ✓ 啟用中MCP3561R-E/ST 概覽
A delta-sigma ADC is a type of sigma-delta analog-to-digital converter that uses oversampling, digital filtering, and noise shaping to convert an analog input into a high-resolution digital value. Delta-sigma ADCs belong to the data-converter and signal-acquisition IC categories and are widely used when high resolution, low noise, and good rejection of low-frequency disturbances are more important than very high conversion rates.
The MCP3561R-E/ST provides 24-bit resolution, selectable input configurations for two single-ended channels or one differential channel, and a maximum programmable data rate of 153.6 kSPS. Its integrated voltage reference and oscillator reduce the number of external components required for standalone measurement systems. Burnout-current detection provides a way to identify open or failed sensor connections, while the integrated temperature sensor supports temperature-related diagnostics.
The device uses the SPI serial interface for digital communication. Differential operation reduces sensitivity to common-mode voltage and helps improve rejection of external interference when the sensor output is referenced to a defined return path. Single-ended operation provides flexibility for systems that must measure two independent sensor voltages. The internal reference, oscillator, and conversion features help minimize board area and system cost.
Typical uses include industrial sensor acquisition, pressure and temperature monitoring, process-control instrumentation, portable measurement systems, and low-noise analog front ends. For battery-powered equipment, the integrated reference and oscillator can simplify power-supply design, although operating mode and data rate still determine average current consumption. Differential wiring is generally preferable when the sensor can provide a complementary output.
PCB design should keep the analog input, reference, and ground paths short, while placing decoupling capacitors close to the supply and ground pins. Route SPI signals away from sensitive analog inputs and use a quiet, low-impedance ground reference. Confirm the required conversion latency, output data rate, input range, and calibration approach before fixing the system sample rate.
This page combines manufacturer specifications, application guidance, package details, and drop-in replacement analysis to support component selection and PCB replacement decisions. The alternatives listed share the intended 20-pin TSSOP footprint, while final design-in decisions should confirm electrical limits, pin functions, qualification status, and timing against the latest manufacturer documentation.
直接替換替代品，適用於 MCP3561R-E/ST — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MCP3561R-E/ST （相同外形與佔位） — 差異在於 Operating Temperature Range.
MCP3561RT-E/ST
✅ 直接替換📋 參考替代品（不在目錄中）
MCP3562R-E/ST
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MCP3564R-E/ST
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MCP3464T-E/ST
✅ 直接替換聯絡詢價
查看資料表 →MCP3561R-E/ST 最大額定值與電氣特性
| ADC Type | 24-bit Delta-Sigma ADC |
| 解析度 | 24 bit |
| Input Configuration | 2 single-ended or 1 differential input |
| Maximum Data Rate | 153.6 kSPS |
| Digital Interface | SPI |
| Internal Voltage Reference | Integrated |
| Internal Oscillator | Integrated |
| Temperature Sensor | Integrated |
| Burnout Sensor Detection | Integrated |
| 封裝 | 20-pin TSSOP |
| 腳位數 | 20 pins |
| 工作溫度範圍 | -40°C to +125°C |
| 生命週期狀態 | Active |
| RoHS 狀態 | Compliant |
| Manufacturer Product Family | MCP3561/2/4R |
| Product Type | Data Acquisition IC |
| 安裝類型 | Surface Mount |
| Lead Time | 3-7 business days |
MCP3561R-E/ST 20-pin tssop 腳位配置指南
MCP3561R-E/ST（20-pin tssop 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MCP3561R-E/ST.
請參閱 資料表 以查看完整腳位配置。
典型應用
MCP3561R-E/ST 適用於 6 應用s: Industrial Pressure Sensor Acquisition, Temperature Monitoring Systems, Portable Environmental Instruments, Battery-Powered Sensor Nodes, Process Control and Data Logging, Precision Analog Sensor Interfaces.
Industrial Pressure Sensor Acquisition
The MCP3561R-E/ST fits industrial pressure and process-sensor front ends that require 24-bit resolution without a high-bandwidth successive-approximation converter. Its differential input can accept a sensor bridge or transmitter signal as a complementary pair, helping reject common-mode voltage and board noise. The maximum 153.6 kSPS output rate supports continuous process monitoring while the integrated internal reference, oscillator, and burnout detection reduce external circuitry. A practical design should use short input traces, a quiet analog ground region, and differential routing wherever the sensor supports it.
推薦
Temperature Monitoring Systems
The MCP3561R-E/ST is appropriate for precision temperature-monitoring systems that combine an external analog sensor with digital diagnostics. Its 24-bit delta-sigma conversion supports fine resolution, while the selectable 153.6 kSPS data rate provides flexibility between measurement speed and noise filtering. The integrated temperature sensor and burnout detection can add device-level temperature information and open-circuit diagnostics without separate components. For thermocouple or RTD systems, the external front-end and linearization circuitry remain essential because the ADC itself does not directly perform those sensor-specific functions.
推薦
Portable Environmental Instruments
The MCP3561R-E/ST suits portable environmental instruments where low component count, low noise, and compact conversion are valuable. The integrated voltage reference and internal oscillator can simplify the analog subsystem, while the 20-pin TSSOP package supports dense PCB layouts. Two single-ended inputs allow an instrument to monitor more than one environmental quantity, or the ADC can operate differentially for improved interference rejection. Firmware should select a data rate and digital-filter setting that fit the battery budget and the required measurement latency.
推薦
Battery-Powered Sensor Nodes
The MCP3561R-E/ST can form the measurement core of a battery-powered sensor node that must preserve small signal detail while operating with limited board area. Its internal reference, oscillator, and burnout detection reduce the number of external support components, and the SPI interface connects efficiently to a low-power embedded controller. The ADC does not specify a fixed average current in the available product information, so the system designer should calculate the duty cycle from the selected output rate, conversion mode, and reference arrangement. Sleep periods and separate analog-domain shutdown strategy remain important system-level optimizations.
推薦
Process Control and Data Logging
The MCP3561R-E/ST is well matched to process-control and laboratory data-logging systems that prioritize resolution and repeatability over waveform capture. Two single-ended inputs can monitor pressure and temperature channels, while differential operation can improve measurement integrity for bridge-based sensors. The 24-bit converter and programmable data rate up to 153.6 kSPS provide ample bandwidth for slow industrial variables. Firmware should use the digital filter and data-ready mechanism to establish a deterministic sampling schedule, and the PCB should maintain separated analog and digital return paths.
推薦
Precision Analog Sensor Interfaces
The MCP3561R-E/ST is useful for precision analog sensor interfaces that need high-resolution conversion without a high-speed ADC. Differential input operation can improve rejection of common-mode disturbance, and the delta-sigma architecture provides digital filtering and noise shaping. The integrated reference and burnout detection are especially useful when the measured element may disconnect or fail during operation. Designers should establish the analog input range, reference accuracy, gain, and system calibration strategy before selecting converter settings; high nominal resolution alone does not determine absolute measurement accuracy.
推薦
推薦產品摘要
工程參考資料，適用於 MCP3561R-E/ST — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MCP3561-E/ST | MCP3561RT-E/ST | MCP3562R-E/ST | MCP3564R-E/ST | MCP3464T-E/ST |
|---|---|---|---|---|---|---|
| Package | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP | 20-TSSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| ADC Architecture | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma | 24-bit Delta-Sigma |
| Digital Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Special Feature | Single-channel family member | Single-channel family member | Single-channel family member | Two-channel family member | Four-channel family member | Related low-power ADC family |
主要差異化特點
- Single-channel choice within a scalable Microchip ADC family (對比MCP3564R-E/ST)
- Published compatibility path within the MCP3561 family (對比MCP3561RT-E/ST)
- Integrated measurement and diagnostic resources (對比MCP3464T-E/ST)
- High-resolution conversion at a configurable rate (對比MCP3562R-E/ST)
設計說明
Place the supply-decoupling capacitors immediately adjacent to the MCP3561R-E/ST supply and ground pins. Route the selected analog input or differential pair as short and symmetrical as practical, and keep the SPI clock, data, and chip-select traces away from the input nodes. A continuous analog ground region beneath the converter and separating analog and digital return currents can reduce noise coupling in precision measurements.
Use differential input wiring when the sensor provides complementary outputs. This keeps the signal away from the analog ground reference and improves rejection of common-mode disturbances. Keep sensor returns and converter ground on the same low-impedance path, avoid long breakout cables between the sensor and ADC, and verify that the source impedance and configured data rate satisfy the input settling requirements in the manufacturer data sheet.
Do not treat 24-bit converter resolution as 24-bit absolute accuracy. Reference accuracy, analog front-end noise, bias current, resistor tolerances, PCB leakage, calibration, and the selected digital filter all influence the final measurement. Establish the required input range, conversion latency, and calibration method before fixing the operating configuration. Verify every pin on a replacement device against the manufacturer pin-description table rather than relying only on the shared TSSOP outline.
The integrated reference and oscillator can reduce external circuitry, but the converter still requires a clean supply and suitable analog input range. Confirm the operating voltage, decoupling value, reference configuration, and digital-interface levels from the manufacturer data sheet before laying out the board. If the system uses a switched supply, regulate the ADC rail or place additional filtering close to the device rather than relying on distant bulk capacitance.
合規資訊
RoHS-compliant status is stated by a published component listing. No explicit REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was identified.